Check out this fallen angel, Sitori (sometimes spelled Sytry or Sitri). He's from a new animu this season called Makai Ouji: Devils and Realist. Sitori appears in episode 2 and is going to be a major recurring character if the show's OP is anything to go by. The show itself reminds me of the first half of Kuroshitsuji's first season: action and comedy, with lots of arrogance on the main character's part.

I don't have a whole lot of art of him yet, but I'll see about making this thread more complete sometime tomorrow.